VTK-2668 - use Lanczos3 lossless when scale ratio is lower under 1 (downscaling)
VTK-2668 - use Lanczos3 lossless when scale ratio is lower under 1 (downscaling)

vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk